----------------------------------------------------------------------------
-- @author Damien Leone <damien.leone@gmail.com>
-- @author Julien Danjou <julien@danjou.info>
-- @copyright 2008 Damien Leone, Julien Danjou
-- @release @AWESOME_VERSION@
----------------------------------------------------------------------------

-- Grab environment
local io = io
local print = print
local setmetatable = setmetatable
local awful = require("awful")
local package = package
local capi =
{
    screen = screen,
    awesome = awesome
}

local module_name = "beautiful"

--- beautiful: theme library
module("beautiful")

-- Local data
local theme = {}

--- Split line in two if it  contains the '=' character.
-- @param line The line to split.
-- @return nil if  the '=' character is not in the string
local function split_line(line)
    local split_val = line:find('=')

    if split_val and line:sub(1, 1) ~= '#' and line:sub(1, 2) ~= '--' then
        -- Remove spaces and tabulations in key
        local key = line:sub(1, split_val - 1):gsub(' ', ''):gsub('\t', '')
        -- and extra spaces and tabulations before value
        local value = line:sub(split_val + 1, -1)
        while value:sub(1, 1) == ' ' or value:sub(1, 1) == '\t' do
            value = value:sub(2, -1)
        end

        return key, value
    end
end

--- Get a value directly.
-- @param key The key.
-- @return The value.
function __index(self, key)
    if theme[key] then
        return theme[key]
    end
end

--- Init function, should be runned at the beginning of configuration file.
-- @param path The theme file path.
function init(path)
    if path then
       local f = io.open(path)

       if not f then
           return print("E: unable to load theme " .. path)
       end

       for line in f:lines() do
            local key, value
            key, value = split_line(line)
            if key then
                if key == "wallpaper_cmd" then
                    for s = 1, capi.screen.count() do
                        awful.spawn(value, s)
                    end
                elseif key == "font" then
                    capi.awesome.font(value)
                elseif key == "fg_normal" then
                    capi.awesome.colors({ fg = value })
                elseif key == "bg_normal" then
                    capi.awesome.colors({ bg = value })
                end
                -- Store.
                theme[key] = value
            end
        end
        f:close()
    end
end

setmetatable(package.loaded[module_name], package.loaded[module_name])

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